Make the additional JVM args supplied come at the front of the arg list so that
any args, which must be at the front of the JVM arguments, can be specified.
This is specifically to support the -server option of the JVM under Unix.
Reported by: Cyril Bouteille <CyrilBouteille@yahoo.com>
git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@268214 13f79535-47bb-0310-9956-ffa450edef68